In some cases like factories where there is a lots of noise , nuclear centers
Which needs silent it's esential to reduce the sound pollution is to use acoustic ,
So we produce some acoustics which where made of cheep materials . Then we
Compared them to know which of them is better to use in buildings or any place
Needs silent . We compared them & reached to the results . Now it's your turn
To visit our site & find out our experiments , analyzes & result processes .